Should I take a pregnancy test?

I have a pregnancy question, I am 22 and have been married for 2 years. I have VERY irregular cycles. I will go for 6-8 months at a time without a cycle. My last cycle was in November I believe, for the past week or so I have had very tender breast and I have been extreamly tired. I was wondering if I should take a HPT or just wait also if anyone knew how ovulation occurs with such irregular cycles. Thanks

Hmm... I see I had a irregular cycle too... I had a baby about 2 years ago... how I knew I was pregnant with this irregular cycle was I got bbbaaad cramps just like period cramps... I felt like I had a cyst that was going to pop or something... then I went to the hospital and they told me I was pregnant but really it was the cramps...then after I had the baby and everything, I wanted to have normal cycles and just not the periods ever 6 - 9 months sooo I decided to just take birth control I needed it anyways... so now to this day I get my period every month now... Okay since its only been a week you might not be able to tell yet if you are pregnant but if I was you ... I would take a home pregnancy test now... then maybe 2 or 3 weeks later if you still feel the same way take a test again or just to be safe take one again.. hope this helps.