Severe pain on front foot-purple color.

Severe pain from toe ball to mid of toes with swelling and purple discoloration at toe ball of left foot. Nails turns blue as pain increases.Pains 24 hrs with peak during night and mild relaxation for a few hours, is felt by ibuprofen 600 mg. Walking with pain is restricting my movement, but rest isn't helping. I had gone to gym for the first time 7 days prior to the day pain started. No workout on all the 6 days in between. The night before the pain started, I had to walk for around 4.5 kms, which isn't unusual for me except that I wasn't wearing my usual soft shoes but a formal hard shoes. Since adolescence, when weather is cool, i used to get swelling, bluish color and severe sharp pain on some fingers and toes. I have seen this in my grandma too. But the pain would be limited to the affected toe or finger alone. This continues throughout the day and night. Last year, the thyroid levels were slightly tending towards hypothyroidism and dr connected that to the pain on fingers.