Not sure if i should call in the morning?

So they other night I had what I assumed was a weird Charlie horse. But it was very pinpointed in one spot. It woke me up out of my sleep and it was about 10 minutes until the pain subsided even after getting up. Anyways it went away and I got up in the morning and my leg was sore but not awful, didn't cause a limp or anything, it just felt fatigued I guess. This morning (about 2 days difference. Happened sunday around 3am) I wake up and I get out of bed and I go to put pressure on it and it hurts enough for me to limp, my leg feels week, the spot in question hurts when any pressure is applied when taking a step. It's sharper than the pains I've had from sore muscles and Charlie horses and in a pin point able location rather than the whole muscle. I've also noticed my leg is a little swollen and is generally feeling a little tingly. I've rested it but every time I get back up it still hurts. The pain is in my right leg, just below the back of my knee. It's painful to the touch but has no visible bruising. I've had a history of blood clots(superficial in my left leg) and have a vascular issue in my right leg called a vascular malformation, basically veins grew in a cluster/mass. The malformation is on the left side of my right calf more towards the front on my leg so it's definitely not the same pain I have with that. I don't know if I should call my OB in the morning, he's been looking over my care and keeping an eye on the vascular stuff throughout my pregnancy. The pains gotten worse since yesterday and I didn't notice swelling or tingling until today. I'm not sure what to do.