Advice!!! Help!!!

For the last two weeks I have noticed a couple or maybe quiet a few changes in my body. My nipples are hyper sensitive like you touch them and it sends this extremely arousing sensation through my body. When my boyfriend and I go to have sex his touch smell and whatever is AMAZING more than normal. My sex drive is triple what it normally is. I haven't had a period since January 20th 2015 and I stopped taking birthcontrol because I was having abnormal bleeding. I haven't gone to take a test cause I feel like maybe it's something else. But looking for advice if anyone has any. I also have had a tight or full feeling in my lower abdomin and constipated at times and yesterday I noticed perfume was making me ill but idk if it was the scent or what could be going on HELP!!!!