My friend needs mayor advice

so she has been feeling kinda sick, for the past months and had her first time with a guy she dated for like about a year, half the time she didnt even used protection during sex...
anyway so she has not had her period for like 5 months and her mom has wonder what has happend she would never expect her daughter is sexually active she was just not raised that way I guess.
there was a rumor going on around saying she was pregnant and her mom found out and immediatly made her take a test which came out to be negative this relieved her but she still has not gotten her period or anything and she has gained a lot of weight
well since her mom has noticed the weight gained she is taking her to the doctor this coming monday to see what she needs to diet in order to go back to her normal weight and even look skinnier. she is very scared that the doctor will say its not extra weigh she has a baby inside her and its bout four five months...
guys she is 16 and has a lot of future ahead of her this would kill the relationship between her family and her and it would bring absolutely every opportunity that is at the moment opened for her
what can she do???
how can she act when she goes to the doctor next monday??
is it too late for an abortion???
please help!!!

there's not much she CAN do, she made the dumb mistake of having unprotected sex.. multiple times.. at home pregnancy tests aren't 100% accurate. false negatives can sometimes happen but false positives are very rare.. that's why they always say to take 2 or 3. if she wants an accurate result, tell her to get a blood test from her doctor, and they'll tell her for sure if she pregnant or not.

and yes, unfortunately it is too late for an abortion. tough luck.

well I guess she just has to deal wit da consequenses now I think its too late for an abortion..she should ask to speak to the doctor when her moms not there you know I think the doctor will understand and ask her mom to step out then she can ask the doctor the worries she has ...hope I helped