TDEE-20% and or eating at no less than BMR??

Allup2Me78

Sooooo I am seriously thinking about increasing my calories come June 1st...I started MFP at 1500 calories and started stalling...Was loosing good at first..Then when I stopped loosing at a good rate, I have now dropped my calorie intake to 1300 and not loosing again...I am wondering if I am not loosing because I am not eating atleast at my BMR which is 1637 and if I shld be considering the 20%-TDEE method which wld put me at 1801 daily..I am only 4'10...That seems like ALOT of food for me being sooo short. There are people I know that are loosing doing the TDEE method but not sure they are as short as me...I normally workout out 4-5 times a week..Nothing strenuous because I have exercise induced asthma but I either walk on a track for about 30-45 min but on most days I am in the gym doing treadmill, bike or elliptical for about a total of 50-60 min..Sometimes I try to add a little strength in for my arms and abs but again nothing strenuous. I am not loosing now so the thought of upping my calories from 1300 to even my BMR of 1637 scares me to death...1801 I am very fearful of...I was thinking about doing 1640 on days I dnt workout and then try for the 1801 on the days I do but I am sooooo lost!! I just dnt knw..I have plenty of people that are telling me if I up my calories I am going to loose, but that it is possible I may gain the first few weeks..Why would I want to do that if I am already gaining....& Honestly, I don't even think I can eat over 1500 calories without being too stuffed..HELP!!!!