as long as you are ovulating its fine.Why don't you try ovulation predictor kits (opk) to see if you are ovulating.the EWCM helps sperm to travel faster to the egg and also to preserve it for longer inside you.However semen also has the same effects.
No it doesn't mean you can't get pregnant. Try increasing your water intake. That helps to thin your secretions out. Also you can try using cough medication that thins secretions. Have you been trying to get pregnant? Honestly I don't think your CM will be a problem though. Keep in mind we only have a 30% chance each month of getting pregnant. Try not to stress yourself out too much. Good luck.