Pains

I need some help I don't wanna call the doctor just yet but after asking some other mommy's about this and if y'all think I should I will. I'm 37 weeks & 1 day pregnant I've been having a sore stomach for about 2 day's it feels like I've been doing sit ups none stop. Now here's the TMI info I noticed yesterday that the right side of my vagina seems alittle red and swollen not to bad to be a major concern but something I happened to noticed I tried looking it up but everything it was talking about I don't have. Like discharge smell or if being different texture or burning etc.