Hello. From your complains, it is evident that you are suffering from pain in inner thigh & groin. Meralgia paresthetica mainly causes pain in outer thigh, and very unlikely to cause pain in inner thigh.
The most common causes for inner thigh pains are muscle strain or
kidney stones or urinary infections. Also very rarely, ilioinguinal nerve or pudental nerve entrapment can cause similar pain.
Maxmala contains pregabalin which can cause the side-effects as you mentioned. They generally gets diminished over time. It is a good drug for neuropathic pains. You can also take tab TRYPTOMER 10mg at bedtime, which can help reducing your pain/
Hope this helps.