What can it be?

Please don't judge me or talk down to me. But I have been so depressed for the last 2 months now I am crying excessively everyday I feel so alone and forgotten. I am trying so hard to ignore these feelings but I just can't for the past few days I have started to get this pain within my vagina it feels like a pinching sensation kind of like needles as well as some mild cramping if I have to use the bathroom my cramping feels intense  I have no idea what it is because it doesn't feel like the ligament pain I felt through out my pregnancy. I am 26 weeks pregnant.