What to do if she said i'm moving too fast?

if a girl says your taking things to fast and strong what can i do i tried calling her today and texting her but she never replied back

Well then she's not communicating.. so send her and e-mail explaining you have concerns and would like to talk to her.. and if you want her understanding cuz you care about her just tell her you're sorry if things were going to fast and if she feel confortable its ok with you to slow things down to where she is comfortable cuz you don't want her to feel uncomfortable. If true..tell you think she's special and beautiful so you hope you can work this out together.
Good luck!

this can be taken so many different ways. you need to define your relationship with this girl.

i will tell you what i meant when i said that to someone. we started out as friends first for a few years and then things progressed into a more intimate relationship and all of a sudden it was just too much mike. everytime i turned around, mike was calling, texting, emailing or in my presence. he was telling me every detail of his life and i was not sure how committed i was to him (since it was still a very new kind of relationship for us) so i was very uncomfortable with this. to make things worse we worked with each other. it was too much for me to handle. i needed my space and needed time to think about what was happening between us. it was not that i was not interested in this person. i just needed time to myself.

If she says you are moving too fast and coming on too strong, it means she probably wants you to back off a little. I would suggest not texting or calling her too often right now.