pain inside vagina , what could it be?!

My last period was the 14th of last month and about a week before it I used soap in my vagina area and started getting pain inside there and thought it may have been from the soap, a week after my period the pain went away and did not come back until this past Saturday and Sunday and I was suppose to get my period Monday and have not, usually every few months it changes around. The pain on a scale of being 1-10 has always been a 1. Today I got a sharp pain down there that lasted a few seconds and it was about a 2 and have not had a problem since, I was working out at the gym right before it happened.I have noticed I have been peeing more then usual

I am currently not sexually active, I was right after my last period and had intercourse a few times and I never felt any pain so I do not think anything is seriously wrong with me and I know it is not an STD but don't know what could be going on..Is this perhaps just something new I will be getting around my period? A few months back I started getting pain in my rectum during my period, I remember years back when I could not even tell I was on it but now I seem to be falling apart when I get it