 [ Symptoms ] montelukast sodium 5 mg tablet can be given to 4 5 year child to treat eczema or frequent allergic child  my son has got rashes over the body normally it appears when there is fever around 100 f every month or two he gets these rashes initially they were limited to chest and back but in subsequent fever it appeared again over body specially on chest back arms and joints doctor has diagnosed and there is a possibility of eczema or allergic initially cetirizine hydrochloride 2 5ml two times a day was given for a more than week now montelukast sodium 5 mg one tablet a day is advised  [ Disease ] hi medically no i think your period has not started from shock to your system and perhaps some stress your putting on yourself all from having unprotected sex so just give it a couple of days to see how it goes so when you have had your period do see your doctor about getting on the bc pill to protect your self for the future but use that wisely remember safe sex is the best sex good luck